1. The purchases reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on January 12, 2012.

2. The amounts reported in column 4 and this footnote (2) were converted from Canadian dollars into U.S. dollars based on the March 16, 2012 closing exchange rate of 0.9920 Canadian dollars per U.S. dollar as quoted by Reuters.

3. The amounts reported in column 4 and this footnote (3) were converted from Canadian dollars into U.S. dollars based on the March 19, 2012 closing exchange rate of 0.9927 Canadian dollars per U.S. dollar as quoted by Reuters.

/s/ David S Field, Attorney-in-fact

03/20/2012

** Signature of Reporting Person

Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person,
see
Instruction
4
(b)(v).